Friction-top can.



No. 878,766. PATENTED FEB. 11, 1908 K. s. BRECKENRIDGE.

FRICTION TOBGAN. APPLIQATIOK FILED MAB..81.1906.

UNITED STATES PATENT -()FF IOE. v

KARL S. BRECKENRIDGE, OF CHICAGO, ILLINOIS, ASSIGN OR TO AMERICAN CANCOMPANY, OF NEW YORK, N. Y., CORPQRATION OF NEW JERSEY.

FRICTION-TOP CAN.

. No. arenas.

Specification of Letters Patent.

Patented Feb. 11 1908.

Application filed March 31 1906. Serial No. 309.049.

. To all whom it may concern 3 Be it known that I, KARL S. BRECKEN-RIDGE, a citizen of the United States, residing in Chicago,-in thecounty of Cook and State of Illinois, have invented a new and useful 1mrovement in Friction-Top Cans,

ofwhich t e following is a specification. My invention relates toimprovements in the construction of friction top cans or cans which arearlapted to be repeatedly closed by simply pressing what is known as afriction ca or cover into the opening in the can I top or ead'which issurrounded by an annular depending friction seat wall or flange.Heretofor'e considerable difllculty has been experienced in thepractical use of friction top cans-1n securing a liquid tight closure,

" the can 13 opened by prying off the friction ea or cover, duster dirtwhich may have colect'ed in the annular groove of the can and alsofromthe circumstance that when top surrounding the outer edge or rim of thehorizontally projecting flangeof the ea; or

, cover,.or sawdust orother material in w ich the-cans are frequentlypacked for shipment,

vciolle'ctsiinsuch groove or channel, and is liabl'eto fall into the canand get mixed into result.

40. "the 0 ening therein and an outer annular. raise rim or flangeuniting said to or head the aint or other material in the can.

T e object of my invention is to provide a simple, strong, eflicient anddurable construction of friction top can by means of which thesedifficulties may be practically obviated or overcome.

My invention consists in the means I en ploy to practically accomplishthis object or That is to say, it consists in connection with the bodyof the can, and the customary so-called friction top or upper headtherefor, furnished with an annular depending friction seat wall orflange surrounding to the can body, with an annularr epression orchannel between such outer raised rim and the inner depending frictionseat wall or flange, of a friction cap or cover having the customaryannular friction seat; wall or flange adapted to fit within the annularfriction seat wall or flange of the can-top and provided with anoutwardly projecting rim or flange'extending over the raised outerrim ofthe can top or head and adapted to engage said outer raised rim ofthe'can top when the friction cap or c'over'is forced home on the canand thus afford aposltive stop or limit der or rim 1/ on the can top.

to the extent to which the ea or cover may be forced into the can top.his outwardly projecting flange ofthe friction cap or cover is furnishedwith an annular groove enchannel which serves to strengthen and stiffenthe same. By these means, I am enabled to produce a successful andpractical liquid tight closure for friction top cans, as in my can, thefriction can or cover has a positive stop to limit the extent to whichit can. be

forced into the friction top or head ofthe can and thus entirelyobviates the prolific cause of leakage in-friction to cans, due'to thecover being driven too Far and thus stretching, expanding and crackingor breaking the annular depending friction seat wall or fian e of thecan top the lower ed e of which 'lange is left plain to give the flangethe necessary elasticity and tight rip upon the cover. And at the sametime y my invention, the annular channel or groove in the can topbetween its outer rim and its friction seat wall or flange is covered,closed and protected from admission of dust, dirt or sawdust or othermaterial by the outwardly projecting rim of the cover which extends overand fits snugly'down against the outer raised rim of the can top.

In the accompanying drawing forming a part of this specification, Figure1 1s a central Vertical sectional view of a friction top can embodyingmy invention. plan view and Fig. 3 is a detail sectional view of thefriction cap or'cover.

In the drawing, A. represents the can body, B the friction'top or upperheadfilthe bottom head and D the friction cap or cover.

The bottom head (1 is united to the can body Fig. 2 is a I can body ispreferably also soldered. The

annular top or head B is also furnished with a depending annularfriction. seat wall or flange If, surrounding the opening B in the cantop. The annular can top B also has an annular depression, groove orchannel I) between its outer annular raised rim b and its inner annularshoulderb at the junction .stop or limit to the extent to which thecover ,may be driven into the can top and thus ,or cracking the annularfriction seat. wall or 'rn'aterials from the upper surface of the-can ofits depending annular seat wall or flange I b, this groove or channelserving to stiffen and strengthen the annular can top. I The frictioncap or cover I) has the customary friction seat wall or flange (1 and anj outwardly projecting flange d furnished with 5 a'fold d at its outerrim or edge, which exl tends over and is adapted to engage the; outerraised annular shoulder or rim of the j annular top B, and thus serve asa stop or limit to the extent to which the friction cap or cover I) maybe forced into the annular top B. 'lhe outwardly projecting flange (1 isalso furnished with an annular depression groove or channel d betweenits outer auj nular shoulder or rim (1 and its inner annular shoulder dwhich is at the junction of the l depending annular friction seat wallor i flange d. The inner and outer annular l shoulders (I and (F of thefriction cap or cover- D are preferably flush with each other I so thatthe pressure of the plunger or tool used in driving or forcing the capor cover I) into the annular top B of the can may come partially uponboth these shoulders. As the outwardly projecting flange (1 of thefriction cap or'eover D projects over and fits against the. outerannular raised shoulder 12*. of the can top B when the cover I) isforced home, it thus serves as an absolute and positive prevents alldanger ofstretching, breaking flange b of the annular top B and at the,same time effectually closes and excludes dust, dirt and sawdust fromthe upper surface of the annular can top. A slight clearance space :1:may be left between the upper surface of the annular top and the undersurface of the flange of the cover D so that the contacting surfacesbetween the annular top and the cover will be only at the friction seatwalls or flanges b and d and at the annular stop shoulders I) and 1 Iclaim:-

1. In a friction top can; the combination With an annular top B havingan outer annular raised shoulder, and an inner annular dependingfriction seat wall surrounding the opening in the annular top of thecan, and having an annular channel within said outer annular shoulder,-of a friction cover having an annular fri'ction seat wall fitting withinthe annular friction seat wall of the can top and provided with anoutwardly projecting flange having anouter rim extending over andfitting against the said outer annularraised shoulder on the can top toserve a. stop and limit the extent to which the said friction cover maybe forced into the annular top of the can and to exclude dirt or' othertop, said annular top and cover contacting only at their interengagingfriction seat walls and at their outer annular shoulders, sub stantiallyas specified.

2. In a friction top can, the combination with an annular top B havingan outer annular raised shoulder, and an inner annular dependingfriction seat wall surrounding the opening in the annular top of thecan, of a friction cover having an annular friction seat wall fittingwithin the annular friction sea-t wall of the can top and provided withan outwardly projecting flange having an outer folded rim extending overand fitting against the said outer annular raised shoulder on the cantop to serve as a stop to limit the extent to which the said frictioncan or cover may be forced into the annular top ofv the can and toexclude dirt'or other materials from the upper surface of the can top,said can top having also an inner annular shoulder 3. In a friciton topcan, the combination with an annular can top having inner and outerannular raised shoulders with an annular channel between said shoulders,and a depending friction seat wall surrounding the opening in said top,of a friction cover having an annular friction seat wall fittingwithinsaid friction seat wall of the can top and an outwardly projectingflangeextending overand engaging the outer annular-shoulder of the cantop to limit the extent to whichthe cap or cover may be forced into thecan top, said. annular top and cover contacting only at theirinterengaging friction seat-walls and at their outer annular shoulderssubstantially as specified.

4. In a friction top can, the combination with an annular can top havinginner and outer raised annular shoulders and a depending friction seatwall surrounding the opening in said top, of a friction cover having anannular friction seat wall and an inner annularshoulder and an outwardlyprojecting rim provided with a marginal fold and extending over andengaging theouter annular shoulder of the can top to limit the extentto'which the cap or cover may be forced into the can top, said can tophaving an annular channel between its inner and. outer annularshoulders, and said friction cover having aniannular channel between theouter marginaffold of its rim and its inner annular shoulder, *saidannular top and cover contacting only. at their interengaging frictionseatwalls and at their outer annular shoulders substantially asspecified KARL S. BRECKENRIDGE. Witnesses:

H. M. MUNDAY, PEARL 'ABRAMs.

